1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes='float2int' -S | FileCheck %s
8 define i16 @simple1(i8 %a) {
9 ; CHECK-LABEL: @simple1(
10 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
11 ; CHECK-NEXT: [[T21:%.*]] = add i32 [[TMP1]], 1
12 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i32 [[T21]] to i16
13 ; CHECK-NEXT: ret i16 [[TMP2]]
15 %t1 = uitofp i8 %a to float
16 %t2 = fadd float %t1, 1.0
17 %t3 = fptoui float %t2 to i16
21 define i8 @simple2(i8 %a) {
22 ; CHECK-LABEL: @simple2(
23 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
24 ; CHECK-NEXT: [[T21:%.*]] = sub i32 [[TMP1]], 1
25 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i32 [[T21]] to i8
26 ; CHECK-NEXT: ret i8 [[TMP2]]
28 %t1 = uitofp i8 %a to float
29 %t2 = fsub float %t1, 1.0
30 %t3 = fptoui float %t2 to i8
34 define i32 @simple3(i8 %a) {
35 ; CHECK-LABEL: @simple3(
36 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
37 ; CHECK-NEXT: [[T21:%.*]] = sub i32 [[TMP1]], 1
38 ; CHECK-NEXT: ret i32 [[T21]]
40 %t1 = uitofp i8 %a to float
41 %t2 = fsub float %t1, 1.0
42 %t3 = fptoui float %t2 to i32
46 define i1 @cmp(i8 %a, i8 %b) {
48 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
49 ; CHECK-NEXT: [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
50 ; CHECK-NEXT: [[T31:%.*]] = icmp slt i32 [[TMP1]], [[TMP2]]
51 ; CHECK-NEXT: ret i1 [[T31]]
53 %t1 = uitofp i8 %a to float
54 %t2 = uitofp i8 %b to float
55 %t3 = fcmp ult float %t1, %t2
59 define i32 @simple4(i32 %a) {
60 ; CHECK-LABEL: @simple4(
61 ; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[A:%.*]] to i64
62 ; CHECK-NEXT: [[T21:%.*]] = add i64 [[TMP1]], 1
63 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[T21]] to i32
64 ; CHECK-NEXT: ret i32 [[TMP2]]
66 %t1 = uitofp i32 %a to double
67 %t2 = fadd double %t1, 1.0
68 %t3 = fptoui double %t2 to i32
72 define i32 @simple5(i8 %a, i8 %b) {
73 ; CHECK-LABEL: @simple5(
74 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
75 ; CHECK-NEXT: [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
76 ; CHECK-NEXT: [[T31:%.*]] = add i32 [[TMP1]], 1
77 ; CHECK-NEXT: [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
78 ; CHECK-NEXT: ret i32 [[T42]]
80 %t1 = uitofp i8 %a to float
81 %t2 = uitofp i8 %b to float
82 %t3 = fadd float %t1, 1.0
83 %t4 = fmul float %t3, %t2
84 %t5 = fptoui float %t4 to i32
88 define i32 @simple6(i8 %a, i8 %b) {
89 ; CHECK-LABEL: @simple6(
90 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
91 ; CHECK-NEXT: [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
92 ; CHECK-NEXT: [[T31:%.*]] = sub i32 0, [[TMP1]]
93 ; CHECK-NEXT: [[T42:%.*]] = mul i32 [[T31]], [[TMP2]]
94 ; CHECK-NEXT: ret i32 [[T42]]
96 %t1 = uitofp i8 %a to float
97 %t2 = uitofp i8 %b to float
99 %t4 = fmul float %t3, %t2
100 %t5 = fptoui float %t4 to i32
104 ; The two chains don't interact - failure of one shouldn't
105 ; cause failure of the other.
107 define i32 @multi1(i8 %a, i8 %b, i8 %c, float %d) {
108 ; CHECK-LABEL: @multi1(
109 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
110 ; CHECK-NEXT: [[TMP2:%.*]] = zext i8 [[B:%.*]] to i32
111 ; CHECK-NEXT: [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
112 ; CHECK-NEXT: [[X1:%.*]] = add i32 [[TMP1]], [[TMP2]]
113 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
114 ; CHECK-NEXT: [[W:%.*]] = fptoui float [[Z]] to i32
115 ; CHECK-NEXT: [[R:%.*]] = add i32 [[X1]], [[W]]
116 ; CHECK-NEXT: ret i32 [[R]]
118 %fa = uitofp i8 %a to float
119 %fb = uitofp i8 %b to float
120 %fc = uitofp i8 %c to float
121 %x = fadd float %fa, %fb
122 %y = fptoui float %x to i32
123 %z = fadd float %fc, %d
124 %w = fptoui float %z to i32
129 define i16 @simple_negzero(i8 %a) {
130 ; CHECK-LABEL: @simple_negzero(
131 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
132 ; CHECK-NEXT: [[T21:%.*]] = add i32 [[TMP1]], 0
133 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i32 [[T21]] to i16
134 ; CHECK-NEXT: ret i16 [[TMP2]]
136 %t1 = uitofp i8 %a to float
137 %t2 = fadd fast float %t1, -0.0
138 %t3 = fptoui float %t2 to i16
142 define i32 @simple_negative(i8 %call) {
143 ; CHECK-LABEL: @simple_negative(
144 ; CHECK-NEXT: [[TMP1:%.*]] = sext i8 [[CALL:%.*]] to i32
145 ; CHECK-NEXT: [[MUL1:%.*]] = mul i32 [[TMP1]], -3
146 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i32 [[MUL1]] to i8
147 ; CHECK-NEXT: [[CONV3:%.*]] = sext i8 [[TMP2]] to i32
148 ; CHECK-NEXT: ret i32 [[CONV3]]
150 %conv1 = sitofp i8 %call to float
151 %mul = fmul float %conv1, -3.000000e+00
152 %conv2 = fptosi float %mul to i8
153 %conv3 = sext i8 %conv2 to i32
157 define i16 @simple_fneg(i8 %a) {
158 ; CHECK-LABEL: @simple_fneg(
159 ; CHECK-NEXT: [[TMP1:%.*]] = zext i8 [[A:%.*]] to i32
160 ; CHECK-NEXT: [[T21:%.*]] = sub i32 0, [[TMP1]]
161 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i32 [[T21]] to i16
162 ; CHECK-NEXT: ret i16 [[TMP2]]
164 %t1 = uitofp i8 %a to float
165 %t2 = fneg fast float %t1
166 %t3 = fptoui float %t2 to i16
174 ; The two chains intersect, which means because one fails, no
175 ; transform can occur.
177 define i32 @neg_multi1(i8 %a, i8 %b, i8 %c, float %d) {
178 ; CHECK-LABEL: @neg_multi1(
179 ; CHECK-NEXT: [[FA:%.*]] = uitofp i8 [[A:%.*]] to float
180 ; CHECK-NEXT: [[FC:%.*]] = uitofp i8 [[C:%.*]] to float
181 ; CHECK-NEXT: [[X:%.*]] = fadd float [[FA]], [[FC]]
182 ; CHECK-NEXT: [[Y:%.*]] = fptoui float [[X]] to i32
183 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[FC]], [[D:%.*]]
184 ; CHECK-NEXT: [[W:%.*]] = fptoui float [[Z]] to i32
185 ; CHECK-NEXT: [[R:%.*]] = add i32 [[Y]], [[W]]
186 ; CHECK-NEXT: ret i32 [[R]]
188 %fa = uitofp i8 %a to float
189 %fc = uitofp i8 %c to float
190 %x = fadd float %fa, %fc
191 %y = fptoui float %x to i32
192 %z = fadd float %fc, %d
193 %w = fptoui float %z to i32
198 ; The i32 * i32 = i64, which has 64 bits, which is greater than the 52 bits
199 ; that can be exactly represented in a double.
201 define i64 @neg_muld(i32 %a, i32 %b) {
202 ; CHECK-LABEL: @neg_muld(
203 ; CHECK-NEXT: [[FA:%.*]] = uitofp i32 [[A:%.*]] to double
204 ; CHECK-NEXT: [[FB:%.*]] = uitofp i32 [[B:%.*]] to double
205 ; CHECK-NEXT: [[MUL:%.*]] = fmul double [[FA]], [[FB]]
206 ; CHECK-NEXT: [[R:%.*]] = fptoui double [[MUL]] to i64
207 ; CHECK-NEXT: ret i64 [[R]]
209 %fa = uitofp i32 %a to double
210 %fb = uitofp i32 %b to double
211 %mul = fmul double %fa, %fb
212 %r = fptoui double %mul to i64
216 ; The i16 * i16 = i32, which can't be represented in a float, but can in a
217 ; double. This should fail, as the written code uses floats, not doubles so
218 ; the original result may be inaccurate.
220 define i32 @neg_mulf(i16 %a, i16 %b) {
221 ; CHECK-LABEL: @neg_mulf(
222 ; CHECK-NEXT: [[FA:%.*]] = uitofp i16 [[A:%.*]] to float
223 ; CHECK-NEXT: [[FB:%.*]] = uitofp i16 [[B:%.*]] to float
224 ; CHECK-NEXT: [[MUL:%.*]] = fmul float [[FA]], [[FB]]
225 ; CHECK-NEXT: [[R:%.*]] = fptoui float [[MUL]] to i32
226 ; CHECK-NEXT: ret i32 [[R]]
228 %fa = uitofp i16 %a to float
229 %fb = uitofp i16 %b to float
230 %mul = fmul float %fa, %fb
231 %r = fptoui float %mul to i32
235 ; "false" doesn't have an icmp equivalent.
237 define i1 @neg_cmp(i8 %a, i8 %b) {
238 ; CHECK-LABEL: @neg_cmp(
239 ; CHECK-NEXT: [[T1:%.*]] = uitofp i8 [[A:%.*]] to float
240 ; CHECK-NEXT: [[T2:%.*]] = uitofp i8 [[B:%.*]] to float
241 ; CHECK-NEXT: [[T3:%.*]] = fcmp false float [[T1]], [[T2]]
242 ; CHECK-NEXT: ret i1 [[T3]]
244 %t1 = uitofp i8 %a to float
245 %t2 = uitofp i8 %b to float
246 %t3 = fcmp false float %t1, %t2
250 ; Division isn't a supported operator.
252 define i16 @neg_div(i8 %a) {
253 ; CHECK-LABEL: @neg_div(
254 ; CHECK-NEXT: [[T1:%.*]] = uitofp i8 [[A:%.*]] to float
255 ; CHECK-NEXT: [[T2:%.*]] = fdiv float [[T1]], 1.000000e+00
256 ; CHECK-NEXT: [[T3:%.*]] = fptoui float [[T2]] to i16
257 ; CHECK-NEXT: ret i16 [[T3]]
259 %t1 = uitofp i8 %a to float
260 %t2 = fdiv float %t1, 1.0
261 %t3 = fptoui float %t2 to i16
265 ; 1.2 is not an integer.
267 define i16 @neg_remainder(i8 %a) {
268 ; CHECK-LABEL: @neg_remainder(
269 ; CHECK-NEXT: [[T1:%.*]] = uitofp i8 [[A:%.*]] to float
270 ; CHECK-NEXT: [[T2:%.*]] = fadd float [[T1]], 1.250000e+00
271 ; CHECK-NEXT: [[T3:%.*]] = fptoui float [[T2]] to i16
272 ; CHECK-NEXT: ret i16 [[T3]]
274 %t1 = uitofp i8 %a to float
275 %t2 = fadd float %t1, 1.25
276 %t3 = fptoui float %t2 to i16
280 ; i80 > i64, which is the largest bitwidth handleable by default.
282 define i80 @neg_toolarge(i80 %a) {
283 ; CHECK-LABEL: @neg_toolarge(
284 ; CHECK-NEXT: [[T1:%.*]] = uitofp i80 [[A:%.*]] to fp128
285 ; CHECK-NEXT: [[T2:%.*]] = fadd fp128 [[T1]], [[T1]]
286 ; CHECK-NEXT: [[T3:%.*]] = fptoui fp128 [[T2]] to i80
287 ; CHECK-NEXT: ret i80 [[T3]]
289 %t1 = uitofp i80 %a to fp128
290 %t2 = fadd fp128 %t1, %t1
291 %t3 = fptoui fp128 %t2 to i80
295 ; The sequence %t1..%t3 cannot be converted because %t4 uses %t2.
297 define i32 @neg_calluser(i32 %value) {
298 ; CHECK-LABEL: @neg_calluser(
299 ; CHECK-NEXT: [[T1:%.*]] = sitofp i32 [[VALUE:%.*]] to double
300 ; CHECK-NEXT: [[T2:%.*]] = fadd double [[T1]], 1.000000e+00
301 ; CHECK-NEXT: [[T3:%.*]] = fcmp olt double [[T2]], 0.000000e+00
302 ; CHECK-NEXT: [[T4:%.*]] = tail call double @g(double [[T2]])
303 ; CHECK-NEXT: [[T5:%.*]] = fptosi double [[T4]] to i32
304 ; CHECK-NEXT: [[T6:%.*]] = zext i1 [[T3]] to i32
305 ; CHECK-NEXT: [[T7:%.*]] = add i32 [[T6]], [[T5]]
306 ; CHECK-NEXT: ret i32 [[T7]]
308 %t1 = sitofp i32 %value to double
309 %t2 = fadd double %t1, 1.0
310 %t3 = fcmp olt double %t2, 0.000000e+00
311 %t4 = tail call double @g(double %t2)
312 %t5 = fptosi double %t4 to i32
313 %t6 = zext i1 %t3 to i32
314 %t7 = add i32 %t6, %t5
318 declare double @g(double)
320 define <4 x i16> @neg_vector(<4 x i8> %a) {
321 ; CHECK-LABEL: @neg_vector(
322 ; CHECK-NEXT: [[T1:%.*]] = uitofp <4 x i8> [[A:%.*]] to <4 x float>
323 ; CHECK-NEXT: [[T2:%.*]] = fptoui <4 x float> [[T1]] to <4 x i16>
324 ; CHECK-NEXT: ret <4 x i16> [[T2]]
326 %t1 = uitofp <4 x i8> %a to <4 x float>
327 %t2 = fptoui <4 x float> %t1 to <4 x i16>
331 ; Don't crash while processing unreachable (non-standard) IR.
333 define void @PR38502() {
334 ; CHECK-LABEL: @PR38502(
336 ; CHECK-NEXT: ret void
338 ; CHECK-NEXT: [[INC1:%.*]] = fadd double [[INC:%.*]], 1.000000e+00
339 ; CHECK-NEXT: [[INC]] = fadd double [[INC1]], 1.000000e+00
340 ; CHECK-NEXT: [[TOBOOL:%.*]] = fcmp une double [[INC]], 0.000000e+00
341 ; CHECK-NEXT: br label [[BOGUSBB:%.*]]
346 bogusBB: ; preds = %bogusBB
347 %inc1 = fadd double %inc, 1.000000e+00
348 %inc = fadd double %inc1, 1.000000e+00
349 %tobool = fcmp une double %inc, 0.000000e+00